Hydraulic wiper blade

A wiper blade and hydraulic technology, applied in the field of hydraulic wiper blades, can solve the problems of uneven force on each point of the rubber strip, affecting the wiping cleanliness, high cost, etc., so as to improve the wiping cleanliness and service life, reduce the The effect of water ripples

Active Publication Date: 2009-06-03
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the limited rigidity of the skeleton structure or pressure spring, the force cannot be transmitted to each point on the scraper blade evenly, and the force on each point of the rubber strip on the scraper blade is not uniform, resulting in a lot of water marks, which affects the degree of scraping
At the same time, uneven pressure is also the root cause of jitter and abnormal noise
[0004] In addition, the cost of the flat scraper is relatively expensive, and the technical requirements are high, and the processing technology is complicated, which is mainly reflected in the compression spring (steel sheet) that transmits the pressure.
The material, shape and processing method of the compression spring have very strict requirements, and there are basically no domestic products that meet the elasticity and anti-corrosion performance at the same time, and similar foreign products are also expensive, especially they must go through complex processing methods such as heat treatment. It is difficult to bend into an arc, and it may rebound with the extension of use time

Method used

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Examples

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Embodiment Construction

[0013] A hydraulic type wiper blade, including a rubber strip 10, the back of the rubber strip 10 is fixedly connected to a compression spring 20, the front of the rubber strip 10 is closely attached to the windshield on the outside of the car, the rubber strip 10 and the compression spring 20 are both The elongated chamber housing 30 with a rod-shaped groove section that matches the curved surface of the windshield and the pressure spring 20 enclose a hydraulic chamber, and the chamber is filled with a liquid 40, which is a liquid with a low viscosity. , such as engine oil, etc., the chamber housing 30 is provided with a cylinder portion 35 for accommodating the piston 31, and a seal is provided between the piston 31 and the chamber housing 30 to prevent the liquid 40 from flowing out of the chamber housing 30, and the piston 31 is in the exposed exterior and The scraping rod 50 is clamped and fitted, as shown in FIGS. 1 , 2 and 5 .

[0014] 2, 3, 5, the profile of the cavity...

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Abstract

The invention relates to a hydraulic wiper blade which comprises a rubber strip. The back surface of the rubber strip is fixedly connected to a pressure spring; a hydraulic chamber is formed by surrounding a cavity casing with rod-shaped outer appearance and groove-shaped cross section and the pressure spring and filled with liquid; a cylinder part for accommodating a piston is arranged on the cavity casing; and the piston is positioned at the exposed outer part and matched with a wiper rod in a clipping manner. The invention adopts the cavity casing to replace the prior framework structure and utilizes the principle of hydraulic power transmission to ensure that the pressure from a wiper arm uniformly acts on the rubber strip of the wiper blade, thereby reducing the generation of drain marks and greatly improving the scraping cleanliness and the service life of the wiper blade.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a hydraulic wiper blade. Background technique [0002] At present, wiper blades are divided into two types: skeleton type wiper blades and boneless wiper blades (also called flat blades). Then the force is transmitted to the rubber strip through the skeleton structure or the clip spring (steel sheet, or elastic guide strip). [0003] Due to the limited rigidity of the skeleton structure or compression spring, the force cannot be transmitted to all points on the scraper blade evenly, and the force on each point of the rubber strip on the scraper blade is uneven, resulting in many water marks, which affects the scraping degree. At the same time, uneven pressure is also the root cause of jitter and abnormal noise. [0004] In addition, the cost of the flat scraper is relatively expensive, and the technical requirements are high, and the processing technology is complicated, which is mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60S1/38
Inventor 罗驰
Owner CHERY AUTOMOBILE CO LTD
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